Leases - Future Minimum Cash Outflow and Weighted-average Remaining Lease Term and Discount Rate (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Future minimum lease payments finance lease
2020	$ 2,865
2021	5,848
2022	5,980
2023	6,114
2024	6,252
Thereafter	79,653
Total lease payments	106,712
Less interest portion	(58,271)
Finance lease obligations	48,441
Future minimum lease payments operating lease
2020	1,843
2021	2,242
2022	945
2023	219
2024	86
Thereafter	210
Total lease payments	5,545
Less interest portion	(521)
Operating lease obligations	5,024
Future minimum lease payments finance and operating lease
2020	4,708
2021	8,090
2022	6,925
2023	6,333
2024	6,338
Thereafter	79,863
Total lease payments	112,257
Less interest portion	(58,792)
Total lease liabilities	$ 53,465	$ 54,245
Lease term and discount rate
Operating leases -Weighted-average remaining lease term (in years)	1 year 8 months 12 days
Finance leases - Weighted-average remaining lease term (in years)	16 years 7 months 6 days
Operating leases - Weighted-average discount rate	4.50%
Finance leases - Weighted-average discount rate	10.50%
Finance lease term	22 years
Minimum
Lease term and discount rate
Operating lease term	1 year
Maximum
Lease term and discount rate
Operating lease term	10 years

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